Besides Ernani, Verdi did at least one other Hugo opera: Rigoletto. The libretto is Le roi s'amuse, with an Italianised setting: Triboulet becomes Rigoletto, François I becomes the Duke of Mantua, and Blanche becomes Gilda.

Amilcare Ponchielli's La Gioconda is based on Angelo, tyran de Padoue, but changes the setting and quite a lot about the characters. There's also a Russian operatic version by César Cui, called Angelo, and Saverio Mercadante’s Il Giuramento.